Allen-Bradley 1771-IFE Analog Input 16SE/8Diff Multi-Range Module

Product Overview

Allen-Bradley 1771-IFE is a high-density analog input module for PLC-5 / 1771 systems. It supports 16 single-ended or 8 differential channels with selectable voltage and current ranges and 12-bit resolution.

Technical Specs

• Channels: 16 single-ended or 8 differential
• Resolution: 12-bit
• Ranges: ±10 V, 0–10 V, 0–5 V, 1–5 V, ±5 V, 4–20 mA, 0–20 mA
• Accuracy: ±0.1% of full scale at 25 °C typical
• Update rate: Approximately 20 ms per channel class
• Isolation: Channel-to-channel (series dependent)
• System: 1771 chassis / PLC-5

Key Features

• Flexible single-ended or differential configuration
• Wide selection of voltage and current ranges
• Onboard jumpers for mode and range selection
• Proven analog input for legacy PLC-5 systems

FAQ

• Max channels? 16 single-ended or 8 differential.
• Resolution? 12-bit.
• Ranges? Multiple voltage and current options.

Installation Guide

1. Set jumpers for single-ended or differential mode and desired ranges.
2. Install the module in the 1771 chassis.
3. Connect field wiring using the appropriate wiring arm or remote termination.
4. Configure the module in the PLC-5 I/O configuration.
5. Verify readings and scaling in the application program.

Selection Tips

• Select differential mode for better noise rejection on low-level signals.
• Confirm series (A/B/C) for isolation and configuration word differences.
• Useful high-density analog input for PLC-5 racks.